Brendan Rodgers has shown pragmatism and adaptability in his approach this season based on the personnel and the personality of his squad, and it has really worked so far. I don't think he can or will simply buy any players he wants that will fit a particular theoretical playing model - the purchasing strategy of the club doesn't allow that. What he seems to be doing so far is maximising the value from players who have become undervalued in the market for whatever reason (Sturridge, Coutinho, Sakho), which is a variation on classic Moneyball as I understand it, but still in that ballpark (to coin a phrase).
In fact, his ability to get the best from most of the squad - whatever level their best actually is - and not to construct a purely structural model of success (ie. formation, style etc.) but also to consider confidence and character as essentials rather than by-products, could be a defining factor. This is what he says he looks for in players and looks to give the team, so I am taking it on face value.
The very best teams always have more than one way of playing over a long season with all the variables. It's normally whatever way in the end helps them win more often than not. Perhaps Barcelona could be said to subvert everything to the model, but its a lot easier to try that when you have all the best players - and last season Bayern blew them away with a game that can encompass pace, possession, counter-attack, directness and skill.
As a work in progress and/or a sign of things to come, I am more than happy with the season so far.